I have a Toshiba Satellite laptop running Win 7. Today I have noticed that the vertical scroll will stop working if I drag ~ 2/3 of the way down the screen and certainly if I go all the way down the screen and release. It does this if I keep my finger on the mouse and keep constantly scrolling up & down or if I just drag straight down and then release. it is doing this across all applications...Office 2010, Chrome, IE, etc. As long as I keep the mouse in the upper half of the screen I have no problems.

I have checked the driver and it says the device is working fine. I've selected update driver and it says I have the most current one (Synaptics PS/2 Port TouchPad version 15.0.8.1 3/10/10). I've also re-booted.

There were quite a few Office & other updates loaded to this laptop on Thursday night. I don't know if these updates have anything to do with the problem or not.

For now, the workaround is using a wireless mouse w/ a scroll bar. The scroll will work fine but if I use the wireless mouse to point & scroll it results in the same problems as described above.